Method for recycling and reusing electrolyte of waste lithium ion battery

Abstract

The invention discloses a method for recycling and reusing electrolyte of a waste lithium ion battery. The method comprises that recycling is carried out through a recycling device; the recycling device comprises a recovery box body, a crushing device is arranged in the recovery box body; a hot air pipe is arranged at one side of the recovery box body; one end of the hot air pipe is connected witha fan heater; the crushing device is used for crushing a waste lithium ion battery; then, a warm air blower is used for blowing out hot air to easily separate volatile electrolyte from broken batteryfragments; the recovery process of the waste lithium ion electrolyte becomes simple and convenient and is easy to operate; an air outlet pipe is arranged at one side of the recovery box body, a gas washing distillation device is arranged and connected with one end of the air outlet pipe, so that lithium ions are separated out in the form of the lithium fluoride crystal, and toxic mixed gas obtained after the reaction of the electrolyte, the air and the water is treated, harm to the environment and the personnel safety due to the direct emission of the toxic mixed gas into the air is avoided.

Description

technical field [0001] The invention relates to a recovery and reuse method, in particular to a recovery and reuse method for the electrolyte solution of a waste lithium-ion battery. Background technique [0002] Lithium-ion batteries have attracted extensive attention because of their high energy density, small size, and light weight. Power batteries have a high design capacity, so the volume is relatively large, and the production cost is high. With the increase in usage, battery material recycling is already necessary. For large-sized batteries, it is more convenient to separate the positive and negative materials for recycling to avoid large pollution of the materials. At the same time, large-size and large-capacity batteries also have the problem of a large amount of electrolyte. The electrolyte of lithium-ion batteries is volatile. When the battery is recycled and disassembled, lithium hexafluorophosphate will generate HF and PF in the presence of air or water. 5 Suc...

AI Technical Summary

Problems solved by technology

[0006] (1) How to crack the battery by setting up a crushing device, and then use the heater to blow out hot air to easily separate the volatile electrolyte from the fragments, so as to solve the problems of inconvenient recycling of waste lithium ion electrolyte and cumbersome process in the prior art;

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